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Quad Circuit Breaker · 15A 2 x 1-Pole + 1 x 2-Pole · Type QT Non-CTL Plug-In · Siemens Q21515CTNC
SKU: Q21515CTNC
Siemens Q21515CTNC is a Type QT non-CTL quad plug-in circuit breaker with two 15A 1-pole circuits and one 15A 2-pole common-trip circuit for 120/240V loadcentres. It is commonly used where panel space is limited and a shared 2-pole 15A circuit is needed; always confirm panel compatibility and local code before purchase.
Delivered to you by Sep 18 (Within Western Canada)
If shipping issues arise, contact us and we’ll work with the courier to keep your job on track.
What this product is for
The Siemens Q21515CTNC is a Type QT non-CTL quad plug-in circuit breaker used to add multiple 15A branch circuits in Siemens-compatible loadcentres. It combines two 15A single-pole circuits and one 15A double-pole common-trip circuit in a compact quad format for 120/240V applications.
Use for
Use this breaker where the panel is listed for Siemens Type QT breakers and the installation requires two 120V 15A circuits plus one 240V 15A 2-pole circuit. It is commonly selected for retrofit work, space-constrained panels, and applications where common trip is required on the 2-pole portion.
Avoid for
Avoid using this breaker in panels not identified for Siemens Type QT breakers, or where CTL restrictions apply and a non-CTL breaker is not permitted. Do not use it as a substitute for tandem, duplex, or standard 2-pole breakers unless the panel labelling and local code allow it.
Best for
Best for electricians and contractors working on Siemens, I-T-E, or Murray-compatible loadcentres that accept Type QT quad breakers and need to maximize available panel space without adding a subpanel.
Installed in
Typically installed in residential and light commercial loadcentres rated for 120/240V single-phase systems. The breaker body is approximately 3 in x 3 in x 2 in (about 76 x 76 x 51 mm), though fitment should always be confirmed by panel schedule and manufacturer labelling.
Why this product exists
This quad breaker exists to provide more circuit capacity in limited panel space while maintaining overcurrent and short-circuit protection. The non-CTL design is typically used for specific replacement or retrofit situations where permitted. As a rule of thumb, 15A branch circuits are commonly paired with #14 AWG copper conductors, but actual conductor sizing and application must follow the Canadian Electrical Code and equipment markings.
Actual performance and suitability depend on panel configuration, conductor type, installation conditions, and local electrical code.
Compared with similar products
Compared with a standard full-size 2-pole breaker, this quad format adds more branch-circuit capacity in the same panel space. Compared with CTL quad breakers, this non-CTL version is intended for applications where a non-CTL configuration is specifically required. Always verify the exact breaker type called for by the loadcentre label before ordering.
Specifications
- Manufacturer: Siemens
- Manufacturer part number: Q21515CTNC
- Breaker type: Type QT quad circuit breaker
- Configuration: 2 x 1-pole 15A + 1 x 2-pole 15A common trip
- Amperage: 15A
- Voltage rating: 120/240 VAC
- Interrupt rating: 10 kAIC
- Mounting: Plug-in
- Trip type: Thermal-magnetic
- Poles: Quad format with common-trip 2-pole section
- Wire range: typically #14 to #8 AWG on applicable terminals
- Application: Siemens-compatible loadcentres listed for Type QT breakers
- Designation: Non-CTL
- BrandSiemens Breakers
- Warranty5 year
- Electrical
- PolesQuad
- Amps2P15A-1P15A
- Physical
- MountingPush on
- Breaker TypeStandard
Minimum Order $20
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Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998(Updated August 2026)
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.
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